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fix(render3d): a lake can be the mirrored water, with its own wet shore

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A reflecting body is clipped to its ellipse like every other unless it is an
unbounded sea, so a map whose reflection belongs to its lake (Maroon Lake, once
its sea sits below it) does not draw that lake's level over every hollow in the
survey. The terrain's wet shore and its forest and scree gates read the carved
lake's line inside its outline (u_lake), the rule grass already used. SPIR-V
regenerated.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-16 15:15:28 +03:00
parent 132deac5bc
commit 6dfdee75e2
11 changed files with 62 additions and 35 deletions
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packages/ludic.render3d/terrain.ludic
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@ -480,6 +480,7 @@ function terrain_bind_prog(p: int) -> void {
var sea = lake
if ter_sea_set { sea = ter_sea_level }
u_f(gpu_uniform(p, "u_sea_level"), sea)
u_f4(gpu_uniform(p, "u_lake"), ter_lake_cx, ter_lake_cz, ter_lake_ex, ter_lake_ez)
u_mat4(gpu_uniform(p, "u_view"), cam_view)
u_mat4(gpu_uniform(p, "u_proj"), cam_proj)
u_f2(gpu_uniform(p, "u_origin"), ter_ox, ter_oz)